Crashes on 5.0 and need to temporary disable raygun

We are getting stackoverflow IIS process crashes on Mindscape.Raygun4Net.SimpleJson.SerializeObject as in below stack. We’ve found that this is known issue https://raygun.com/forums/thread/26292

Quote:"I've just pushed a new release of Raygun4Net (v5.1.1) to NuGet which fixes the stack overflow issue. The problem was a bug in the cyclic detection code that I wrote in the SimpleJson file. Sorry for the trouble! Also there are few other potentially related exceptions in a dump"

We’ll upgrade to the latest version (which one?) ASAP, please confirm that it will fix this crash and exceptions.

Upgrade and code redeploy will take time. Meanwhile I feel we need to turn off Raygun on server to prevent this reporting. We are using add name="RaygunErrorModule" type="Mindscape.Raygun4Net.RaygunHttpModule" .net deployment. Will it be enough to set raygunSettings apiKey="" to empty string? Or do we need to take add module out of web.config too?

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